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High pitched noise is not good. It may indicate that a bearing is going out. I would not use Kirby as it may lead to burned motor.

If you feel that it vibrates quite a bit too - then it may be only broken fan blade.

Fan blade - you are looking ar around $40-$50 and if this is a motor bearing - $60-$80. If anyone wants to charge you more - we will repair it but you will have to pay shipping both ways (roughly another $30 both ways all together)

Ohhh yeah - try it with the hose. If no sound then brush roll bearings may be bad...

Good Luck,Rocky:-)If you want to send it for service - go to GoodVac.com click on SERVICE, print form, fill out and ship it here.

It sounds like you may have a bearing problem. The motor bearing eventually gets damaged by the water vapor that is drawn in by the fan. This will cause a high pitch squeel from the motor. It is possible to replace the bearing, but it should be addressed by a professional techician.